Reverse Startup Procedure for Multi Terminal Smart Transformer Supplying Data Centres

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Reverse Startup Procedure for Multi Terminal Smart Transformer Supplying Data Centres

Conference Paper (2025)

Author(s)

N. Anandh (Indian Institute of Technology Guwahati)

D. Das (Mit Manipal, TU Delft - Intelligent Electrical Power Grids)

Chandan Kumar

Research Group

Intelligent Electrical Power Grids

DOI related publication

https://doi.org/10.1109/GCON65540.2025.11173345

Battery energy storage system (BESS) Islanding Data centres LVdc loads Multi terminal smart transformer (MTST)

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https://resolver.tudelft.nl/uuid:f8d73bc6-3852-4c6b-b9fb-7773a693197a

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Publication Year

2025

Language

English

Research Group

Intelligent Electrical Power Grids

Bibliographical Note

Green Open Access added to TU Delft Institutional Repository as part of the Taverne amendment. More information about this copyright law amendment can be found at https://www.openaccess.nl. Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. @en

ISBN (electronic)

9798331513450

Reuse Rights

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Abstract

A reverse startup procedure for a multi terminal smart transformer (MTST) supplying data centres, transitioning from islanded operation to grid connected operation is proposed in this paper. During islanded operation, the MTST low voltage (LV) converter remains active, while the MTST multi active bridge (MAB) converter is partially active and MTST medium voltage (MV) converter is inactive. To facilitate reconnection to the MV grid from the LV side, these converters need to be activated to allow the power flow. In this operation, the power is drawn from a battery energy storage system (BESS) connected to LVdc-1 bus to charge the MTST MVdc bus. Once the MVdc bus is sufficiently charged, the MTST-MV converter is initiated to establish the connection between the LV side and the MV grid. Simulation is performed in PSCAD and the results are provided to validate the effectiveness of this startup operation.

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